Bucket for excavating-machines.



J. P. WALSH.

BUCKET FOR EXGAVATING MACHINES.

APPLICATION FILED JAN. 14, 1911.

1,065,286, Ptented June 17, 1913.

JAMES P. WALSH, OF IVIARENGO,

IOWA.

BUCKET FOR EXCAVATING-MACHINES.

To all whom 2'75 may concern Be it known that I, JAMES P. WALSH, acitizen of the United States, residing in Marengo, county of Iowa, andState of Iowa, have invented a new and useful Improvement in Buckets forExcavating-Machines, of which the following is a specification.

The object of my invention is to provide a means simple, strong, durableand inexpensive in construction, for thoroughly cleaning the buckets ofan endless chain excavating system, each time the buckets travel thecircuit. I accomplish this object by constructing my buckets of twodistinct parts which are separated from each other, at proper times, inorder to permit one portion of the bucket to pass over a scraper duringthe revolution of the chain.

My invention consists of certain details of construction, hereinafterset forth, pointed out in my claims, and illustrated in the accompanyingdrawings, in which- Figure I shows a rear elevation View of my device;Fig. II is a side elevation view of the same, partly in section; Fig.III is a sectional view taken on the indicated line 33, of Fig. I; and,Fig. IV is a side elevation view of a portion of my improved de vice inoperation.

Referring to the accompanying drawings the reference numeral 10 is usedto indicate the outer wall of my bucket, preferably semi-circular inconformation and constructed of sheet metal, said wall being open atbot-h ends and formed with a cutting edge on one end, as shown.

The numerals 11 indicate two companion chains, exactly similar in everyrespect, formed with alternating open and closed links and the wall 10is mounted, transversely, between these two chains, by means of rivets12. A rear wall 13, formed with a flange 14: designed as a bottom for mybucket, is secured to a chain 15, located midway between the chains 11,said chain 15 being also constructed with alternating open and closedlinks. The rear wall 13 is constructed, preferably, of sheet metal andthe same is secured, by means of lugs 16 and rivets '17 and 18, flushwith the chain 15, and parallel thereto, and the flange portion 1 1extends outwardly, on a slight incline, across the open space betweenthe chains 11 and the outwardly curving wall 10, thus forming a bottomfor my bucket, when the Specification of Letters Patent.

Application filed January 14, 1911.

Patented June 1 7, 1913.

Serial NO. 602,662.

parts are operating together. The three chains, indicated by thenumerals 11 and 15, are formed of exactly similar links, but the chain15 is shorter than the chains 11, for purposes hereinafter set forth.

The numerals 19 and 20 indicate sprocket wheels, mounted, at the upperextremity of the supporting frame for my device, on a common shaft, saidsprocket wheels being designed to operate their respective chains 11.Mounted in the said supporting frame, by means of a shaft, and below thesprocket wheels 19 and 20, is a sprocket wheel 21 designed to drive thechain 15. All the aforesaid sprocket wheels are of like size and drivenby the same power and, obviously, their revolutions are exactly similar.

It is obvious that the chain 15, passing over the sprocket wheel 21,will withdraw the portion forming the rear wall 13, from the outercovering 10, on account of the mounting of the said sprocket wheels, andthe distance between the sprocket wheels 19 and 20 and the sprocketwheel 21 is such that the portion constituting the rear wall 13 and thebottom 14, will be withdrawn from the outer covering 10 as the chainsmove upwardly, and will pass over its sprocket wheel 21 and enter thepreceding outer covering 10 on the chains 11, as the chains descend,after passing over their sprocket wheels 19 and 20. This leaves thebucket 1O without back or bottom and allowing a scraper 22, mounted inthe frame work above the sprocket Wheel 21, to traverse the full lengthof the interior of the outer covering 10*, as it travels up past saidscraper, thereby removing all wet and sticky earth. The balance of thedistance the chains 11 and the chain 15 run together with the coverings10 and the back walls 13 in their proper positions, with relation toeach other, as shown in Fig. I.

Having thus described my invention what I claim and desire to secure byLetters Patent of the United States is:

1. In combination with a pair of spaced endless sprocket chains, abucket having the free ends of the sides of its outer wall secured tosaid chains, a third endless chain located in the space between saidpair of chains, a rear wall for the bucket having a flange at one endwhich forms the bucket bottom, an upper and a lower pair of rightangular lugs rigidly secured at one end to the center of said rear Walland having their opposite ends extending on and secured to the oppositesides of said third chain, the upper end of the third chain beinglocated below the upper ends of the said pair of chains, and ahorizontal scraper located between the upper ends of said chains and theupper end of said third chain to engage on the interior of the bucket.

2. In combination with a pair of spaced endless sprocket chains, abucket having the free ends of the sides of its outer wall secured tosaid chains, a third endless chain located in the space between saidpair of chains, a rear wall for the bucket having a flange at one endwhich forms the bucket bottom, means to secure said rear wall to thethird chain, the upper end of the third chain extending below the upperends of the pair of chains, and a scraper arranged in the space betweenthe upper end of the third chain and the upper ends of the pair ofchains to engage on the interior of the bucket.

JAMES P. WALSH.

lVitnesses JOHN L. XVALSH, WILLIAM C. /VALsH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, 1). G.

